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Commit 9411d277 authored by Hyesoo Yu's avatar Hyesoo Yu Committed by Suren Baghdasaryan
Browse files

ANDROID: mm: add vendor padding for SPECULATIVE_PAGE_FAULTS 



Fields are added on mm_struct, vm_area_struct and vm_fault
to support vendor feature, speculative page fault.

Bug: 155842923
Change-Id: Iedda086d6f83f1353da5a2ed1e24f7ba7dde43f2
Merged-In: Iedda086d6f83f1353da5a2ed1e24f7ba7dde43f2
Signed-off-by: default avatarHyesoo Yu <hyesoo.yu@samsung.com>
parent 7121ba12

include/linux/mm.h

+3 −0
Original line number Diff line number Diff line
@@ -28,6 +28,7 @@ 
#include <linux/overflow.h>

#include <linux/sizes.h>

#include <linux/android_kabi.h>

#include <linux/android_vendor.h>



struct mempolicy;

struct anon_vma;
@@ -453,6 +454,8 @@ struct vm_fault { 
					 */

	unsigned long vma_flags;	/* Speculative Page Fault field */

	pgprot_t vma_page_prot;		/* Speculative Page Fault field */

	ANDROID_VENDOR_DATA(1);

	ANDROID_VENDOR_DATA(2);

};



/* page entry size for vm->huge_fault() */

include/linux/mm_types.h

+3 −0
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ 
#include <linux/page-flags-layout.h>

#include <linux/workqueue.h>

#include <linux/android_kabi.h>

#include <linux/android_vendor.h>



#include <asm/mmu.h>
@@ -366,6 +367,7 @@ struct vm_area_struct { 
	ANDROID_KABI_RESERVE(2);

	ANDROID_KABI_RESERVE(3);

	ANDROID_KABI_RESERVE(4);

	ANDROID_VENDOR_DATA(1);

} __randomize_layout;



struct core_thread {
@@ -537,6 +539,7 @@ struct mm_struct { 
		atomic_long_t hugetlb_usage;

#endif

		struct work_struct async_put_work;

		ANDROID_VENDOR_DATA(1);

	} __randomize_layout;



	/*